Blinker signaling has been accomplished through the periscopes of submerged submarines. Periscopes used in submarines are so arranged that they can be turned to permit a view of the entire horizon, with built-in rangefinders and typically six times. A periscopes basic purpose is to allow submarine crews to see objects above the water while the ship remains submerged. Periscopes can be used in many ways beyond seeing above water from a submarine. In world war i, they helped soldiers see beyond the tops. Simon lake used periscopes in his submarines in 1902. Sir howard grubb perfected the device in world war i.
Taking a periscope to a concert would be a good idea? Periscopes started being used in submarines from around 1860. Periscopes are standard equipment on submarines, but a submarine captain might go crazy using one like this. The overall design of the classical submarine periscope is very. Was eventually corrected when simon lake used prisms and lenses to. British submarine technology is cutting-edge, but for a century they have relied on one piece of technology to see above the waters surface. .